Humans cannot see, smell, or taste individual micro-organisms such as bacteria, protozoa and certain fungi and algae. Such living organisms are microscopic and too small to be seen without magnification instruments (they were first observed by Anton van Leeuwenhoek in 1675).Know More
Some micro-organisms reproduce, replicate and swarm to form clusters large enough to be seen, smelled and tasted by humans. For example, bunches of mold spores -members of the fungi kingdom- on a loaf of bread may be seen, smelled and tasted, while an individual mold spore is undetectable.
Another example is the bacteria that cause bad breath. While not visible to the naked eye, clusters of the bacteria do have a unique taste and smell.Learn more about Biology
An anaerobic jar works when an individual places water, sodium borohydride, sodium bicarbonate and citric acid in a sealed jar along with some microorganisms. The solutions react due to a palladium catalyst to form hydrogen, carbon dioxide and condensation, using up the oxygen to create an oxygen-free or anaerobic environment.Full Answer >
While not every microorganism is dangerous, some microorganisms can cause disease and infections in humans and other living things. Microorganisms, also called microbes, also contribute to decomposition and spoilage of food, and they can leave toxic waste products behind even if they are eradicated from the contaminated material.Full Answer >
Humans are part of the great ape family, Hominidae. Other great apes include bonobos, chimpanzees, gorillas and orangutans. Humans are similar to apes in terms of anatomy, genome, ancestry and behavior.Full Answer >
Humans are deuterostomes. Deuterostomes belong to the even larger bilateria group. The bilateria group of organisms is thus named because the organisms are bilaterally symmetrical with matching left and right sides to their bodies.Full Answer >